Add Grasp (Affordance) Memory

• Define ARON type GraspCandidate based on GraspCandidate (see GraspCandidateProviderInterface.ice) in library GraspingUtility. (For an ARON example, see ObjectPose.xml)
• Create new memory server GraspMemory (a component, see ExampleMemory). Memory name: Grasp
• There, add a core segment Candidate with the ARON type defined above.
• Implement an example GraspCandidateProvider committing data to the memory.
• Make memory server visualize the grasp candidates